diff --git a/include/util/tracer.h b/include/util/tracer.h
index b01bc37..ca84e81 100644
--- a/include/util/tracer.h
+++ b/include/util/tracer.h
@@ -85,6 +85,7 @@ class tag {
 		// in the base type
 
 		for (unsigned i = 0; i < static_var_snapshots.size(); i++) {
+			if (static_var_snapshots[i] == nullptr) continue;
 			h = hash_combine(h, static_var_snapshots[i]->computed_hash);
 		}